Nelly, Florida Georgia Line 'Cruise' through the TODAY plaza

Who's working on Labor Day? Florida Georgia Line and Nelly, that's who! The country sensations paired up with the rap/R&B star to create one of summer's most unlikely hits, "Cruise," and had no problem working up a little sweat on what's a holiday for most of the rest of the country on Monday.

"Cruise" was already a hit for the duo before Nelly stepped in with a remixed version, and it took off all over again. The song was also a great chance for the members of FGL (Tyler Hubbard and Brian Kelley) to meet up with one of their favorite artists, who happened to be on their label. "I've been a huge fan of Nelly since middle school," said Hubbard.

Together and separately, the musicians had four shots at ruling the stage on Monday; the threesome kicked things off with "Cruise" (naturally), followed by Nelly blasting through a medley of his hits and a full-out version of "Heaven." Later on, FGL wrapped things up with "Round Here."

"It's always good as a musician to dig deep sometimes, and sometimes to have a little fun," said Nelly, adding "and hopefully you have a successful life that allows you to create that mixture."

Video: Country duo Florida Georgia Line is currently on the road with Taylor Swift and Luke Bryan, and they perform the catchy song “Round Here” that’s currently a top 5 single on the country music charts.

Video: The country duo Florida Georgia Line tells TODAY.com it was a dream come true when their album hit number one on the charts this June, and Nelly says that as long as the music is right, he’ll collaborate with just about any artist.